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well done i was nearly there counting on 19 letters on in the alphabet :)

And we have a winner! I'll send your prize momentarily!

What do you think of the puzzle? Is the QR code an unnecessary step? Should I choose something more complicated than a Caesar cipher in the future?

Thank you, sir! TBH I used the letters posted by the fellow above me. I'm pretty green at code-cracking but I had fun.

Perhaps I will forego the QR codes in order to play fair with those who can't easily use them, then.